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WO2020206597A1 - Procédé de distribution de puissance et dispositif terminal - Google Patents

Procédé de distribution de puissance et dispositif terminal Download PDF

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Publication number
WO2020206597A1
WO2020206597A1 PCT/CN2019/081812 CN2019081812W WO2020206597A1 WO 2020206597 A1 WO2020206597 A1 WO 2020206597A1 CN 2019081812 W CN2019081812 W CN 2019081812W WO 2020206597 A1 WO2020206597 A1 WO 2020206597A1
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WIPO (PCT)
Prior art keywords
power allocation
pusch
allocation priority
terminal device
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/081812
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English (en)
Chinese (zh)
Inventor
贺传峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2019/081812 priority Critical patent/WO2020206597A1/fr
Publication of WO2020206597A1 publication Critical patent/WO2020206597A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading

Definitions

  • This application relates to the field of communications, and in particular to a method and terminal equipment for power distribution.
  • a two-step random access process can be used.
  • message 1 (Msg 1) and message 3 (Msg 3) in the four-step random access process can be sent as the first message (Msg A) in the two-step random access process
  • message 2 (Msg 2) and message 2 (Msg 4) in the four-step random access process as the second message (Msg B) in the two-step random access process.
  • the multiple signals include the PUSCH in the first message, and the sum of the transmission power of the multiple signals is greater than the maximum transmission power of the terminal device, how does the terminal device To determine the transmit power of the Physical Uplink Shared Channel (PUSCH) in the first message, there is currently no clear regulation.
  • PUSCH Physical Uplink Shared Channel
  • the embodiments of the present application provide a power allocation method and terminal equipment.
  • the terminal equipment transmits multiple signals at the same transmission time, and the sum of the transmission power of the multiple signals is greater than the maximum transmission of the terminal equipment
  • the PUSCH transmit power in the first message can be effectively determined.
  • a method for power allocation includes: a terminal device determines a total transmission power at a first transmission moment, where the total transmission power is the sum of the transmission powers of multiple signals to be transmitted, and the multiple Each signal to be sent includes a first physical uplink shared channel PUSCH, the first PUSCH belongs to a first message, and the first message includes a random access preamble and the first PUSCH;
  • the terminal device determines the first transmit power of the first PUSCH according to the priority order of power allocation.
  • a terminal device which is used to execute the method in the first aspect or its implementation manners.
  • the terminal device includes a functional module for executing the method in the foregoing first aspect or each implementation manner thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a device for implementing any one of the foregoing first aspect or the method in each implementation manner thereof.
  • the device includes a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect or the method in each implementation mode thereof.
  • the device may be a chip.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any aspect of the above-mentioned first aspect or the method in each implementation manner thereof.
  • a computer program product including computer program instructions, which cause a computer to execute any one of the above-mentioned aspects of the first aspect or the method in each implementation manner thereof.
  • a computer program which when running on a computer, causes the computer to execute any one of the above-mentioned aspects of the first aspect or the method in each implementation manner thereof.
  • the terminal device when the terminal device transmits multiple signals at the same transmission time, the multiple signals include the PUSCH in the first message, and the sum of the transmission power of the multiple signals is greater than the maximum of the terminal device.
  • the terminal device can determine the transmission power of the PUSCH in the first message according to the priority order of power allocation. Because in the priority order of power allocation, power can be allocated to the signal with higher priority and the signal with lower priority. The power of the signal may be compressed, so that the transmission power of the PUSCH in the first message can be effectively determined.
  • Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.
  • Fig. 2 is a schematic flowchart of a four-step random access method according to an embodiment of the present application.
  • Fig. 3 is a schematic flowchart of a four-step random access to a two-step random access according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a first message in a two-step random access according to an embodiment of the present application.
  • Fig. 5 is a schematic flowchart of a method for power allocation according to an embodiment of the present application.
  • Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.
  • Fig. 8 is a schematic block diagram of a device according to an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • New Radio, NR the evolution system of the NR system, the LTE (LTE-based access to unlicensed spectrum, LTE-U) system on the unlicensed spectrum, the NR (NR-based access to unlicensed spectrum, on the unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • New Radio, NR the evolution system of the NR system, the LTE (LTE-based access to unlicense
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment.
  • CA Carrier Aggregation
  • DC dual connectivity
  • SA standalone
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device 110 may provide services for a cell, and the terminal device 120 communicates with the network device 110 through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell may be the network device 110 (for example, a base station)
  • the corresponding cell the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell).
  • the small cell here can include, for example, a metro cell, a micro cell, and a pico cell. Femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • the terminal device After the cell search process, the terminal device has achieved downlink synchronization with the cell, so the terminal device can receive downlink data. However, the terminal equipment can only perform uplink transmission if it has achieved uplink synchronization with the cell. The terminal equipment can establish a connection with the cell and obtain uplink synchronization through a random access procedure (Random Access Procedure).
  • Random Access Procedure Random Access Procedure
  • Step 1 The terminal device sends a Preamble (that is, message1, Msg1) to the network device.
  • a Preamble that is, message1, Msg1
  • the random access preamble may also be referred to as a preamble, a random access preamble sequence, a preamble sequence, and so on.
  • the terminal device may select physical random access channel (Physical Random Access Channel, PRACH) resources, and the PRACH resources may include time domain resources, frequency domain resources, and code domain resources.
  • PRACH Physical Random Access Channel
  • the terminal device can send the selected Preamble on the selected PRACH resource.
  • the terminal device may obtain the PRACH resource for sending the preamble through random access resource configuration.
  • the random access resource configuration information used by the cell can be indicated to the accessed terminal equipment in the system message, so that the terminal equipment can determine the time domain information, frequency domain information and information of the PRACH resource through the indicated random access resource configuration information. Code domain information.
  • the random access resource configuration can include 256 configurations, including but not limited to Preamble format, period, radio frame offset, subframe number in the radio frame, start symbol in the subframe, and PRACH time slot in the subframe. Format, the number of PRACH opportunities in the PRACH time slot, the duration of PRACH opportunities, etc.
  • Step 2 The network device sends a random access response (Random Access Response, RAR, that is, message2, Msg2) to the terminal device
  • RAR Random Access Response
  • the network device can send an RAR to the terminal device to inform the terminal device of the uplink resource information that can be used when sending Msg3.
  • the RAR may include information such as the identifier of the preamble, the timing advance (Time Advance, TA), the uplink grant (UL grant), and the temporary cell-radio network temporary identifier (Temporary Cell Radio Network Temporary Identifier, TC-RNTI).
  • the terminal device after the terminal device sends the Preamble to the network device, it can open a RAR window, in the RAR window according to the random access radio network temporary identifier (Random Access Radio Network Temporary Identifier, RA-RNTI) detection Corresponding physical downlink control channel (Physical Downlink Control Channel, PDCCH). If the terminal device detects the PDCCH scrambled by the RA-RNTI, it can obtain the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) scheduled by the PDCCH. Wherein, the PDSCH includes the RAR corresponding to the Preamble.
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • the terminal device can consider that this random access procedure has failed. It should be understood that both the terminal equipment and the network equipment need to uniquely determine the value of RA-RNTI, otherwise the terminal equipment cannot decode the RAR.
  • the RA-RNTI may calculate the value of the RA-RNTI by using the time-frequency position of the Preamble that is clear to both the transmitting and receiving parties.
  • RA-RNTI associated with Preamble can be calculated by formula (1):
  • RA-RNTI 1+s_id+14 ⁇ t_id+14 ⁇ 80 ⁇ f_id+14 ⁇ 80 ⁇ 8 ⁇ ul_carrier_id (1)
  • s_id is the index of the first Orthogonal Frequency Division Multiplexing (OFDM) symbol of the PRACH resource (0 ⁇ s_id ⁇ 14), and t_id is the index of the first time slot of the PRACH resource in a system frame.
  • f_id is the index of the PRACH resource in the frequency domain (0 ⁇ f_id ⁇ 8)
  • ul_carrier_id is the uplink carrier used to transmit the Preamble (0 represents the NUL carrier, 1 represents the SUL carrier).
  • f_id is fixed to 0.
  • Step 3 The terminal device sends Msg3.
  • the terminal device After receiving the RAR message, the terminal device determines whether the RAR is its own RAR message. For example, the terminal device can use the preamble index to check. After determining that it is its own RAR message, it can generate Msg3 in the RRC layer and send it to The network device sends Msg3, where Msg3 needs to carry temporary identification information specific to the terminal device, etc.
  • Step 4 The network device sends the terminal device Msg4.
  • Msg4 may include contention resolution messages and uplink transmission resources allocated for terminal equipment.
  • the terminal device After receiving the Msg4 sent by the network device, the terminal device detects whether the Msg4 includes the terminal device-specific temporary identifier included in the Msg3 of the terminal device. If it is included, it indicates that the random access process of the terminal device is successful, otherwise it is considered that the random access process has failed, and the terminal device needs to initiate the random access process from step 1 again.
  • the delay of four-step random access is relatively large, which is not suitable for the low-latency and high-reliability scenarios in 5G.
  • a two-step random access process scheme is proposed. As shown in Figure 3, in the two-step random access process, in simple terms, it is equivalent to combining the first and third steps of the four-step random access process into the first step in the two-step random access process. The second and fourth steps of the four-step random access process are combined into the second step of the two-step random access process.
  • the terminal device sends Msg A to the network device, and Msg A includes Preamble and PUSCH, as shown in Figure 4.
  • the network device sends Msg B to the terminal device, and Msg B includes PDCCH and PDSCH.
  • FIG. 3 is only a specific implementation of the two-step random access process, and should not limit the protection scope of the present application.
  • the terminal device may send signals on multiple uplink carriers, such as sending PUSCH, physical uplink control channel (PUCCH) ), PRACH, sounding reference signal (Sounding Reference Signal, SRS), etc.
  • the terminal device can respectively determine the transmit power of the signal to be sent according to the defined signal power calculation method.
  • the maximum transmission power of a terminal device is limited. If the sum of the power of each uplink channel or signal on each uplink carrier of the terminal device is greater than the maximum transmission power of the terminal device, the power of some or all of the uplink channels or signals needs to be Perform a certain degree of power compression to meet the maximum transmit power of the terminal device for transmission.
  • the priority of power allocation between different signals is defined, that is, the priority order of power allocation.
  • the terminal device can allocate the priority according to the specified power Power allocation is performed sequentially, that is, priority is allocated to high-priority signals, and the power of low-priority signals may be compressed so that the transmission power of the terminal device is less than or equal to the maximum transmission power of the terminal device.
  • the priority order of power allocation defined in version 15 (Rel) is as follows, among which the priority is arranged from high to low:
  • PRACH PRACH transmission on the PCell
  • Primary Cell Primary Cell, PCell
  • HARQ Hybrid Automatic Repeat Request
  • ACK Hybrid Automatic Repeat Request
  • PUCCH Switchuling Request, SR
  • PUSCH PUCCH transmission
  • CSI Channel State Information
  • PUSCH Physical Broadcast Channel
  • PUSCH (PUSCH transmission without HARQ-ACK information or CSI) that does not carry HARQ-ACK information or CSI;
  • SRS transmission in which the priority of aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell (SRS transmission, with aperiodic SRS having higher priority than semi- persistent and/or periodic SRS, or PRACH transmission on a serving cell other than the PCell).
  • the power allocation priority of the PRACH transmitted on the PCell is the highest, and the power allocation priority of the PRACH transmitted on the SRS or non-PCell is the lowest.
  • the terminal device can preferentially allocate the power to the primary cell group (Master Cell Group, MCG) or the secondary cell group (Secondary Cell Group, SCG)
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the signal on the PCell is followed by the PCell of the SCG.
  • the PCell of the MCG is preferentially allocated, followed by the PCell of the SCG.
  • the terminal device can preferentially allocate power to the signal on the carrier used to transmit the PRACH. If there is no carrier configured to transmit the PUCCH, the terminal device can preferentially allocate power to the non-Supplementary UL Carrier.
  • the multiple signals include the PUSCH in the first message, and the sum of the transmission powers of the multiple signals When it is greater than the maximum transmission power of the terminal device, how the terminal device determines the transmission power of the PUSCH in the first message is currently not clearly defined.
  • the embodiment of the present application proposes a power allocation method. When a terminal device transmits multiple signals at the same transmission time, and the sum of the transmission power of the multiple signals is greater than the maximum transmission power of the terminal device, the first The PUSCH transmit power in a message.
  • FIG. 5 is a schematic flowchart of a method 300 for power allocation according to an embodiment of the present application.
  • the method described in FIG. 5 may be executed by a terminal device, and the terminal device may be, for example, the terminal device 120 shown in FIG. 1.
  • the method 300 may include at least part of the following content.
  • the method 300 may be applied to a scenario where a single cell is configured with multiple uplink carriers, may also be applied to a carrier aggregation scenario, or may be applied to other scenarios, which is not limited in the embodiment of the present application.
  • the terminal device determines the total transmission power at the first transmission time, where the total transmission power at the first transmission time is the sum of the transmission powers of multiple signals to be transmitted, and the multiple signals to be transmitted include the first PUSCH, A PUSCH belongs to the first message, and the first message includes the Preamble and the first PUSCH.
  • the first message including the Preamble and the first PUSCH can be understood as: between the terminal device sending the Preamble to the network device and sending the first PUSCH, there is no other message between the network device and the terminal device, and/or ,
  • the network device can send a random access response to the terminal device simultaneously for the Preamble and the first PUSCH.
  • the first PUSCH may carry information used to distinguish terminal devices, such as terminal device identifiers, radio network temporary identifiers (RNTI), and so on.
  • the first PUSCH may also carry the random access trigger event.
  • the random access process can usually be triggered by the following events:
  • the terminal device can enter the RRC connected state (RRC_CONNECTED) from the radio resource control (Radio Resource Control, RRC) idle state (RRC_IDLE state).
  • RRC Radio Resource Control
  • the terminal device is in the connected state and needs to establish uplink synchronization with the new cell.
  • the uplink is in a "non-synchronised” state (DL or UL data arrival during RRC_CONNECTED when UL synchronisation status is "non-synchronised”).
  • the terminal device transitions from the RRC inactive state (Transition from RRC_INACTIVE).
  • the terminal device requests other system information (Other System Information, OSI).
  • OSI Operating System Information
  • the terminal device needs to perform beam failure recovery (Beam failure recovery).
  • the content carried by the first PUSCH may be different.
  • the first PUSCH may carry the RRC connection request message (RRC Setup Request) generated by the RRC layer.
  • RRC Setup Request RRC connection request message
  • the first PUSCH may also carry, for example, a 5G-service temporary mobile subscriber identity (Serving-Temporary Mobile Subscriber Identity, S-TMSI) of the terminal device or a random number.
  • S-TMSI 5G-service temporary mobile subscriber identity
  • the first PUSCH may carry an RRC connection reestablishment request message (RRC Reestablishment Request) generated by the RRC layer.
  • RRC Reestablishment Request RRC connection reestablishment request message
  • the first PUSCH may also carry, for example, a Cell Radio Network Temporary Identifier (C-RNTI) and the like.
  • C-RNTI Cell Radio Network Temporary Identifier
  • the first PUSCH may carry an RRC handover confirmation message (RRC Handover Confirm) generated by the RRC layer, which carries the C-RNTI of the terminal device.
  • RRC Handover Confirm RRC handover confirmation message
  • the first PUSCH may also carry information such as Buffer Status Report (BSR).
  • BSR Buffer Status Report
  • the first PUSCH can at least carry the C-RNTI of the terminal device.
  • the multiple signals to be sent in the foregoing content may include, but are not limited to: PUSCH, PUCCH, PRACH, SRS, and so on.
  • the PDCCH can also be an enhanced physical downlink control channel (EPDCCH), a machine type communication physical downlink control channel (Machine Type Communication Physical Downlink Control Channel, MPDCCH), and a physical sidelink control channel (Physical Sidelink). Control Channel, PSCCH) or Narrowband Physical Downlink Control Channel (NPDCCH), which is not specifically limited in the embodiment of the application.
  • EPDCCH enhanced physical downlink control channel
  • MPDCCH Machine Type Communication Physical Downlink Control Channel
  • NPDCCH Narrowband Physical Downlink Control Channel
  • the sending channel can be understood as: sending data carried by the PUCCH, or allocating transmission resources to the PUCCH, or transmitting data on the PUCCH on the transmission resources.
  • the terminal device may be many ways for the terminal device to determine the total transmit power at the first transmission moment, which is not limited in this application.
  • the terminal device can calculate the transmission power of the signal to be transmitted according to the existing signal power calculation method, and then sum the transmission power of each signal to be transmitted to obtain the total transmission power at the first transmission moment.
  • the total transmission power at the first transmission time is not the actual transmission power of the terminal device at the first transmission time, and the total transmission power at the first transmission time is greater than or equal to the actual transmission power at the first transmission time.
  • the terminal device determines the first transmit power of the first PUSCH according to the priority order of power allocation.
  • the first maximum transmit power may be the absolute maximum transmit power P CMAX (i) of the terminal device, or may also be the linear value of the absolute maximum transmit power (Linear Value), that is, the standard
  • the terminal equipment can allocate the transmission power to PUSCH/PUCCH/PRACH/SRS according to the priority order of power allocation, so that the transmission power of the terminal equipment in each symbol of the transmission opportunity i is less than or equal to
  • the terminal device When the total transmit power at the first transmission moment is greater than the first maximum transmit power of the terminal device, the terminal device needs to compress all or part of the signal to be sent, that is, re-determine the transmit power of the signal to be sent, including re-determining the first PUSCH The transmit power to meet the first maximum transmit power of the terminal device.
  • the terminal device may determine the first transmit power of the first PUSCH according to the priority order of power allocation.
  • the first transmission power of the first PUSCH may be less than or equal to the transmission power of the first PUSCH before the transmission power is re-determined.
  • the power allocation priority order may be the same as the power allocation priority order of the foregoing content (for ease of description, it is referred to as the first power allocation priority order).
  • PRACH that is, Msg1
  • the first PUSCH that is, Msg3
  • the network device can use the downlink control information of the TC-RNTI scrambling code ( Downlink Control Information, DCI) format (format) 0_0 to schedule the retransmission of Msg3.
  • DCI Downlink Control Information
  • the first message includes Msg1 and Msg3 in the four-step random access process, that is, it includes the Preamble and the first PUSCH.
  • the first power allocation priority order is used, when the power of the first PUSCH part in the first message is compressed due to its low power allocation priority, the first message may not be correctly received by the network device, which may cause The retransmission of the first message increases the two-step random access delay.
  • this embodiment may increase additional uplink interference and waste of random access resources.
  • the embodiment of the present application proposes another embodiment.
  • the terminal device may determine the first transmit power of the first PUSCH according to the second power allocation priority order.
  • the second power allocation priority order may include that the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities: the power allocation priority of PUSCH that does not carry HARQ-ACK information , The power allocation priority of PUSCH that does not carry CSI.
  • the power allocation priority of the first PUSCH may be the same as the power allocation priority of the PRACH transmitted in the PCell.
  • the priority order of the second power allocation may be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the second power allocation priority order may include that the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities: the power allocation priority of the PUCCH carrying CSI, the PUSCH carrying CSI Power allocation priority of the first PUSCH, and the power allocation priority of the first PUSCH is lower than at least one of the following power allocation priorities: power allocation priority of PUCCH carrying HARQ-ACK information and/or SR, and HARQ-ACK information The priority of PUSCH power allocation.
  • the priority order of the second power allocation may be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the second power allocation priority order may include that the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities: the power allocation priority of PUSCH that does not carry HARQ-ACK information, The power allocation priority of the PUSCH not carrying CSI, and the power allocation priority of the first PUSCH is lower than at least one of the following power allocation priorities: the power allocation priority of the PUCCH carrying CSI, the power allocation of the PUSCH carrying CSI priority.
  • the priority order of the second power allocation may be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the priority of the power allocation of the first PUSCH is higher, so that the priority of the power allocation of the first PUSCH can be guaranteed, and the first message cannot be correctly received by the network device, which causes the first message to be repeated.
  • the transmission problem reduces the time delay of the two-step random access process and also reduces the waste of random access resources due to uplink interference.
  • the terminal device may determine the second power allocation priority order according to the number of retransmissions of the first message.
  • the number of retransmissions of the first message may also be referred to as the power climb count parameter of the first message.
  • the second power allocation priority order may include that the power allocation priority of the first PUSCH is lower than the preset power allocation priority.
  • the second power allocation priority order may include that the power allocation priority of the first PUSCH is higher than the preset power allocation priority. In this way, it can be ensured that the power allocation priority of the first PUSCH is higher, so that the power of the first message with a higher number of retransmissions can be guaranteed first, and it can be ensured that the first message can be successfully received by the network device as soon as possible.
  • the threshold may be preset on the terminal device based on a protocol, or pre-configured by the network device to the terminal device, for example, it may be configured through RRC signaling.
  • the preset power allocation priority may be at least one of the following power allocation priorities:
  • the preset power allocation priority is the power allocation priority of PUCCH carrying HARQ-ACK information and/or SR
  • the power allocation priority of PUSCH carrying HARQ-ACK information and the retransmission of the first message The number of times is less than or equal to the threshold.
  • the second power allocation priority can be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the preset power allocation priority is the power allocation priority of PUCCH carrying HARQ-ACK information and/or SR
  • the power allocation priority of PUSCH carrying HARQ-ACK information and the repetition of the first message The number of transmissions is greater than or equal to the threshold.
  • the second power allocation priority can be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the second power allocation priority may be as follows:
  • PUCCH carrying HARQ-ACK information and/or SR, or PUSCH carrying HARQ-ACK information
  • aperiodic SRS is higher than semi-static and/or periodic SRS, or PRACH transmission on serving cells other than PCell.
  • the terminal device sets different priorities for the power allocation of the first PUSCH in the first message according to the number of retransmissions of the first message or the power rise count parameter, so as to give priority to ensuring that the number of retransmissions is large or the power is high.
  • Increase the power allocation of the first message with a large count parameter avoid more retransmissions of the first message due to power compression, reduce the delay of the two-step random access process, and reduce uplink interference and random access resources Waste.
  • the terminal device may determine the first PUSCH first transmit power according to the priority order of power allocation.
  • the first transmit power of the first PUSCH may also be determined according to other methods. For example, the terminal device may determine the first transmission power of the first PUSCH according to the channel quality of the first PUSCH at the first transmission moment.
  • the terminal device may send the first PUSCH to the network device based on the first transmission power at the first transmission moment.
  • the terminal device may also determine the second transmission power, where the second transmission power may be the transmission power of each signal to be transmitted except the first PUSCH among the plurality of signals to be transmitted; then, the terminal The device may transmit signals to be transmitted except for the first PUSCH among the plurality of signals to be transmitted based on the second transmission power.
  • the terminal device may determine the second transmit power in the same manner as the first transmit power, for example, determine the second transmit power according to the priority order of the second power allocation.
  • the terminal device may determine the second transmit power according to the second power allocation priority order.
  • the implementation manner for the terminal device to determine the second transmit power may be different from the manner for determining the first transmit power, as long as the total transmit power at the first transmission moment is less than or equal to the first maximum transmit power of the terminal device.
  • the terminal device determines the first transmission power according to the second power allocation priority order, and determines the second transmission power according to the channel quality at the first transmission moment.
  • the multiple signals include the PUSCH in the first message, and the sum of the transmission powers of the multiple signals is greater than that of the terminal device.
  • the terminal device can determine the PUSCH transmit power in the first message according to the priority order of power allocation. Because in the priority order of power allocation, power can be allocated to the signal with high priority first, and the priority is low The power of the signal may be compressed, so that the PUSCH transmission power in the first message can be effectively determined.
  • the size of the sequence number of the foregoing processes does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not be implemented in this application.
  • the implementation process of the example constitutes any limitation.
  • the communication method according to the embodiment of the present application is described in detail above.
  • the communication device according to the embodiment of the present application will be described below in conjunction with FIG. 6 and FIG. 7.
  • the technical features described in the method embodiment are applicable to the following device embodiments.
  • FIG. 6 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the processing unit 410 is configured to determine the total transmit power at the first transmission moment, where the total transmit power is the sum of the transmit powers of multiple signals to be transmitted, and the multiple signals to be transmitted include a first PUSCH, and the first PUSCH Belongs to a first message, and the first message includes a random access preamble and the first PUSCH;
  • the processing unit 410 is further configured to determine the first transmission power of the first PUSCH according to the priority order of power allocation when the total transmission power is greater than the first maximum transmission power of the terminal device 400.
  • the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities:
  • the power allocation priority of the first PUSCH is the same as the power allocation priority of the physical random access channel PRACH transmitted in the primary cell.
  • the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities: the power of the PUCCH carrying CSI Allocation priority and power allocation priority of the PUSCH carrying the CSI;
  • the power allocation priority of the PUSCH carrying the HARQ-ACK information is the power allocation priority of the PUSCH carrying the HARQ-ACK information.
  • the power allocation priority of the first PUSCH is higher than at least one of the following power allocation priorities: no HARQ-ACK information is carried The priority of power allocation of PUSCH and the priority of power allocation of PUSCH not carrying CSI;
  • the power allocation priority of the first PUSCH is lower than at least one of the following power allocation priorities: the power allocation priority of the PUCCH carrying CSI, and the power allocation priority of the PUSCH carrying the CSI.
  • the processing unit 410 is further configured to: determine the power allocation priority order according to the number of retransmissions of the first message.
  • the power allocation priority of the first PUSCH is lower than the predetermined Set priority for power allocation.
  • the power allocation priority of the first PUSCH is higher than the pre- Set priority for power allocation.
  • the preset power allocation priority is at least one of the following power allocation priorities:
  • the power allocation priority of the PUSCH that does not carry the CSI is the power allocation priority of the PUSCH that does not carry the CSI.
  • the threshold is preset on the terminal device.
  • the terminal device 400 further includes: a communication unit 420, configured to send the first transmission power to the network device based on the first transmission time at the first transmission moment PUSCH.
  • the processing unit 410 is further configured to: determine a second transmission power according to the priority order of power allocation, where the second transmission power is among the plurality of signals to be transmitted Transmit power of the signal to be transmitted except for the first PUSCH;
  • the terminal device 400 further includes: a communication unit 420, configured to transmit signals to be transmitted other than the first PUSCH among the plurality of signals to be transmitted based on the second transmission power.
  • the PUSCH that does not carry the HARQ-ACK information and the PUSCH that does not carry the CSI do not belong to the first message.
  • the PUSCH carrying the HARQ-ACK information and the PUSCH carrying the CSI do not belong to the first message.
  • the first message is the first message in two-step random access.
  • terminal device 400 may correspond to the terminal device in the method 300, and can implement the corresponding operations of the terminal device in the method 300. For brevity, details are not described herein again.
  • FIG. 7 is a schematic structural diagram of a terminal device 500 provided by an embodiment of the present application.
  • the terminal device 500 shown in FIG. 7 includes a processor 510, and the processor 510 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the terminal device 500 may further include a memory 520.
  • the processor 510 may call and run a computer program from the memory 520 to implement the method in the embodiment of the present application.
  • the memory 520 may be a separate device independent of the processor 510, or may be integrated in the processor 510.
  • the terminal device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include an antenna, and the number of antennas may be one or more.
  • the terminal device 500 may specifically be a terminal device of an embodiment of the present application, and the terminal device 500 may implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For brevity, details are not repeated here. .
  • Fig. 8 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 600 shown in FIG. 8 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the apparatus 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the device 600 may further include an input interface 630.
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the device 600 may further include an output interface 640.
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the device can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the device 600 may be a chip. It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de distribution de puissance et un dispositif terminal. Dans le procédé selon l'invention : un dispositif terminal détermine une puissance de transmission totale à un premier moment de transmission, la puissance de transmission totale étant la somme des puissances de transmission d'une pluralité de signaux à envoyer, la pluralité de signaux comprenant un premier canal partagé de liaison montante physique (PUSCH), le premier PUSCH appartenant à un premier message, et le premier message comprenant un préambule d'accès aléatoire et le premier PUSCH (310) ; et lorsque la puissance de transmission totale est supérieure à une première puissance de transmission maximale du dispositif de terminal, ce dernier détermine une première puissance de transmission du premier PUSCH selon un ordre de priorité de distribution de puissance (320). Selon l'invention, lorsque le dispositif terminal envoie une pluralité de signaux au même moment de transmission et que la somme des puissances de transmission de la pluralité de signaux est supérieure à la puissance de transmission maximale du dispositif terminal, la puissance de transmission d'un PUSCH dans un premier message peut être déterminée efficacement.
PCT/CN2019/081812 2019-04-08 2019-04-08 Procédé de distribution de puissance et dispositif terminal Ceased WO2020206597A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102300305A (zh) * 2011-09-23 2011-12-28 电信科学技术研究院 一种上行功率控制的方法及装置
US20140171144A1 (en) * 2011-07-29 2014-06-19 Lg Electronics Inc. Terminal equipment and method for controlling uplink transmission power
CN104812046A (zh) * 2014-01-28 2015-07-29 电信科学技术研究院 一种上行信道的功率控制方法及装置
CN108207022A (zh) * 2017-12-26 2018-06-26 广东欧珀移动通信有限公司 功率调整方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140171144A1 (en) * 2011-07-29 2014-06-19 Lg Electronics Inc. Terminal equipment and method for controlling uplink transmission power
CN102300305A (zh) * 2011-09-23 2011-12-28 电信科学技术研究院 一种上行功率控制的方法及装置
CN104812046A (zh) * 2014-01-28 2015-07-29 电信科学技术研究院 一种上行信道的功率控制方法及装置
CN108207022A (zh) * 2017-12-26 2018-06-26 广东欧珀移动通信有限公司 功率调整方法及装置

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